Window-sash holder



Feb. 21, 1928. 1,660,071

E. R. DRAVER WINDOW SASH HOLDER Filed May 18. 1926 if A. BEAVER 5y 2:1; aft/ 1 Patented Feb. 21, 1928.

UNITED "STATES PATENT OFFICE.

WINDOW-SASH HOLDER.

' v A lication neam 1a, 1926. Serial No. 109,977.

; and in which This invention relates to a window sash holder. 'As is-"well knownpit has been-a common practice to counterbalance window sashes withwe'ights which are disposed and move in the Window casings, said weights being connected to the sash by cords and running over pulleys mounted in the casing. This equipment involves aj'great deal ofspecial work and construction and the weights areat' the same'time apt frequently tobecome disconnected.

It is an object ofthis invention, therefore, to provide a window'sash holderladapted to hold the window sash inany" position to which it may be raised and yet it will notin any way interfere with the desired'movements of the sash, and one which will elimimate the necessity for any weights,we1ght cords, weight boxes and pulleys.

It is a furtherbbject of the invention to provide a window sash holder comprising resiliently acting :means adapted tofhold the sash in any. position to which it "may be raised, the sash being easily moved upward and being movabledownward with more resistance. Y

'It is more specifically an objectof the invention to provide a window-sash holder in the form of asear spring secured tothe sash and having a compressible and expansible portion disposed in a recess therein and having an arm adapted to move in contact with the window casing and adapted to hold the-sash stationary in any desired-position. These and other objects and advantages of the invention will be fully set forth in the: following description made in connection with the accompanying drawing, in which like reference characters refer 5 to similar parts sthroughout the several views Fig.1 is a' view in front elevation of a portion of a window casing. and sash therein, showingthe invention applied thereto,

'certain parts' being broken away andvothers shown in vertical section; V V

- Fig.2 :isa horizontal section taken-on line 2 2 of-Fig. 1-; i

YFigQB .isa perspective viewofflthe sash holder; v

. Fig. 4- is a view partly in front-elevation and partly 'in'v'ertical section of a modified form of the device; and Y Fig. 5 is a view inelevation as seen from the left of Fig. 4.

'Referring to the drawings,a portion of a' window casing is shown, comprising the inner member or stile stri 7 and the side member 8. The side mem er has adjacent its center the usual parting strip 9 between the lower sash 10 and the upper sashll and is further shown as equipped with the outside bead 12 and the inside finishing strip, or molding 13 which, with the parting head 9, forms the guideway for the lower sash 10. The sash 10 is illustrated as having the usual pane 14 therein.

In accordance with the present invention, I

a recess or mortise 10 is formed in one of the members 8 or 10 and while it is within the scope of this invention to have therecess and sash holding means in either the casing or sash, in the embodiment of the invention illustrated, the recess 10 is shown as'formed in the sash'10. A member 15 is provided, and while this member might be variously formed and of various styles of material, in the embodiment of the invention illustrated it is shown as formed from a flat spring plate of uniform width. The member 15 comprises a straight portion 15 having an aperture 15 adapted'to receive the screw 16 whichsecures the member 15 to the sash 10. Asshown in'Figrfl, the member 15 .is secured to and set in the inner edge ofthe sash 10 substantially centrally thereof. The member 15 also comprises a loop portion 15 extending substantially at right angles to theportion-15 and said loop portion has formed'at one end an arm 15 projecting outwardly beyond the straight portion 15 extending downwardly some'distance and having its terminal end again curved inwardly. y,

It will be noted that the upper part of the arm l5 extends at a. slight angle tothe inner side of themember-S and of the easing, while the lower, :po-rtionof the arm 15 which is bent inwardly, extends ata greater angle to the inner sideof the member 8. As shown in Fig.1, the loopl 151is..di sposed in the recess 10?: andsaidrecess has a down-.

wardly extending and narrower portion at the outer side of the sash in which the lower end of the arm 15 is disposed. A screw 17 extends through the sash 10 from the inner side thereof having its threaded end in contact with the inner side of themember 15 and at the lower part of the portion 15 The screw 17 is provided with a grooved head which preferably will be. disposed in a recess 1O formed in the sash 10.

With the structure described, the arm 15 bears against the inner side of the casing or member 8 with considerable friction. This friction is more than suiiicient to sustain the weight of the sashqlO. When the sash is raised upwardly, the arm 15 slides along the inside of the member 8 and owing to the cam action against the member 8, said arm swings slightly downwardly, expanding the loop 15 sothatthe arm 15 also swings inwardly. This greatly relieves the friction against the member 8 so that the sash can be raised with very little friction between the arm 15 and the casing 8.

When the window sash tendsto move down- Y wardly, however, the frictionof the arm 15 against the casing tends to swing said arm upwardly. This acts to compress the loop 15 and to raise said loop. It will be noted that the top of the loop is disposed substantiallyagainst the top of recess 10 so that the loop cannot bodily be raised. As the arm 15 swings upwardly and outwardly, it increases the friction on the member 8. The

arm 15, however, will slide along the mem-' her 8 if sufficient force be applied to the window sash so that said sash can readily be pulled down and elosed'by merely exerting sufficient pressure thereon. As stated, the friction of arm 15 against the casing 8 is more than sufficient to sustain the weight of the sash 10. As stated, the arm 15 makes a more abrupt angle with the casing 8 at its lower portion, which gives a more decided cam action on the arm 15 when the sash is lowered. The screw 17' may be adjusted from theinside of the sash to exert more pressure on the member 15 thus moving the same slightly outward. This will cause the arm 15 to exert more pressure on the window casing so'that the friction will be increased. This adjustment may be desirable 'to properly position the member 15 for light and heavy sashes. If desired, a pad of yielding material such as felt or rubber 18 may be disposed inthe' loop 15 This does not interfere with the action ofthe member 15 and tends to deaden the noise, if any, and

to prevent any squeak or chatter of the member 15 when the sash is being moved.

In the embodiment shown in Figs. 1 and 5, a member 20 is provided having a cylindrical shank portion 20 and an outer head or cam portion 20 The portion 20 has a cylindrical portion extending inwardly therefrom forming a shoulder 20. A coil compression spring 21 surrounds the shank 20 bearing at one end against the shoulder 20 and hearing at its other end against a washer 22. The members 20, 21 and 22 are disposed in a mortise or. recess23, formed in the side of the sash 23. The recess 23 has a reduced portion 23 at its inner end forming a shoulder against which the washer 22 fits. It will be noted that the head 2O has a curved outer surface of considerable width, the upper portion of which extends at quite 'a sharp'angle to the inner side of thesash23 ,and thus to theinner side of the casing. The lower portion -,of said surface of the head 20" iscurve'd i-nwardly, at

a much sharper angle torthe innerside ofthe sash 23 and, thus to the inner side of the casing. The upper end of thehead 20 is disposed in a small arm of the recess 23 so that the head 20 is prevented from turning about the axis of its shank'20.

In operation, when the sash 23 is raised,

the upper portion of the head 20 will slide along the inside of. the casing and thehead 20? and member 20will be moved inwardly of the sash, thus compressing the spring 21.

of the member 20 against the casing. When the sash is lowered, however, the lower portion of the surface on head 20? acts against the side of the casing and tends to swing the member 20 upwardly. This causes the head 20 to wedge or bind against the casing and sash. This action is more than suflicientnormally to hold the sash inany position to which it is moved. If sufficient pressure,

The sash 23 can thus be raised with very little effort and with very little friction however, be exerted on the sash, it can be pulled down and the member 20 willmove inwardly, thus compressing the spring 21 and permitting the sash to be lowered.

From the above description it is seen that applicant has provided an extremely simple and efficient window sash holder. The holderv automatically sustains the sash in any position' in which it is moved, permits the sash readily to be raised and does not inter fere withthe closing of'the sash. The device I eliminatesthe necessity of the cumbersome weights,cords, pulleys and the weight box which have heretofore commonly been used with the window structures. The deviceis extremely simple, comprises fewparts and stated, consists in a device capable of carrying out the objects above set'forth, in the novel parts and combinations of parts dis-' closed and defined in the appended claims.

What is claimed is:

1.. The combination with a window casing member and window sash member of a resiliently actuated means carried by one of said members having a portion engaged by the other member permitting relative movement of said means and other member with little resistance when the sash is raised and having means acting on said portion permitting relative movement of said means and other member with much greater resistance when said sash is lowered, said means normally engaging said other member with suflicient friction to sustain the weight of said sash.

2. The combination with a window casing member and a window sash member of a resiliently movable device carried by one of said members having a portion engaging the other member frictionally to hold said sash in stationary position, said device having a cam surface engaging said other member whereby when the sash is raised, said portion will be moved to decrease the friction so that said sash can easily be raised and also having a surface engaging said other member so that when said sash is lowered, said portion will be swung to increase the fric-' tion.

3. The combination with a window casing and a window sash of a sear spring carried by one of said members and disposed in a recess therein, having an arm adapted frictionally to engage the other of said members normally to hold the sash in any stationary position, said arm having a surface at its upper portion inclined at an angle to said other member whereby when said sash is raised, said arm is swung to decrease the friction and having a surface extending at a greater angle to said other member so that when said sash is lowered, said arm is swung outward to increase the friction.

4. The combination with a window casing and a window sash of a flat spring carried in a recess in said sash, said spring being bent to have a compressible and expansible loop disposed in said recess and to have an arm projecting from said recess and adapted frictionally to engage the inner side of said casing, saidarm normally holding said sash in stationary position, said arm having an upper surface which, when the sash is raised, engages said casing to swing said arm inwardly and expand said loop and having a surface engaging said casing which, when the sash is lowered, swings said arm out.

wardly and compresses said loop whereby the friction is increased.

5. The combination with a window casing member and a window sash member of a spring device secured to one of said members, having a substantially closed loop portion disposed in a recess in said member and having anarm connected to one end of said loop frictionally engaging the other member to hold the window sash member in any position to which it is raised but permitting up and down movement of said sash member.

6. The combination with a window casing and a window sash slidable therein, of a resilient device carried in a recess in one of said members and having a portion adapted frictionally to engage the other portion, said portion being formed with upper and lower surfaces, the upper surface engaging said other member to move said device to a releasing position whereby it will have little friction when the window is raised and the lower surface engaging said other member and moving said device to a wedging'position when the window is lowered whereby said portion will have increased friction and hold said members relatively stationary.

In testimony whereof I aflix my signature.

EMIL B DRAVER. 

